Fuse body for projectile fuses



me 2Q 19m L. E. RMONDY FUSE BODY FOR PROJECTILE FUSES Filed Sept. 26. 1924 Patented June 2, 1925.

russ BODY ron PROJEGTILE rusas.

Application filed september 26, 1924. seriai No. 740,120.

To all whom t may concern: l Be it known that I, LoN EMILE BE- MoNDxg a citizen of the Republic of France,

resident of Rueil, France, have invented new and useful Improvements in Fuse Bodies for Projectile Fuses, which are -fully s et forth in the following specification.

The present invention relates to the construction of fuse bodies for projectile fuses.

In conformity to the invention, itfis possible to construct a fuse body in an entirely economical and judicious. manner, by the use of materials, of which some are strong, and others of less strength, suitably arranged in one block. The new fuse body finds its application particularly in modern fuses which are extremely sensitive and of instantaneous operation. In these fuses it is above all important to consider the resistance of the parts of the fuse body to the forces to which they will be subjected upon the firing of the shot, since the deformation under the shock of impact can in no way affect the operation, the latter taking place upon the lightest contact and being ensured before a deformation by penetration can have been produced.

For these modern fuses, the body of the fuse is, according to the invention, comprised of two members, connected together i by one being cast on the other in a mould,

and arranged in a special manner; one, made of stronger metal, comprises an exposed back part which acts as support for the detonator, and may, for this purpose, carry a screw thread or be worked in any other suitable manner, while the front part of this member acts as framework for the front part of the fuse body in which itV hooks and is embedded; this front part, .in which is placed the firing mechanism, may be made of a weaker metal, since it is reinforced, at the points which are weakest when the shot is fired, by its framework'provided by the detonator which is embedded in it.

Two forms of construction of the invention are illustrated, by way of example, in the accompanying drawing, in longitudinal sectional elevation along the axis of the fuse body.

' In conformity to the invention, the fuse body is constituted by the joining together in the mould, of two members:

l. A fuse body proper A, the inside and outside profile of which varies according to the type of fuse, and which holds, in the usual manner, the mechanism, and, if desired, the varioussafety devices. The body A may be made of a relatively weak material, for example of aluminium vor aluminium alloy, and has the double advantage of having a low cost price and loffering facilities for casting which reducethe costs of manufacture. f w Y 2. A detonator carrier B--B1 made of a stronger material, such as brass for example, comprising an exposed back part B, which may be screw threaded or worked in any other suitable manner so as to be adapted for receiving at the lower end the detonator or a part on the latter. The front part of this stronger member is embedded in the body of the fuse proper A and serves as a reinforcing framework for the latter.

It is understood that the shape of the detonator carrying framework Bl-B may vary considerably, the conditions it must fulfill being, on the ,one hand, of serving as attachment by its outer exposed end B, during assembly, for the deto-nator or a part of it, and on the other hand, of embedding itself by its front part, in the mould, in the body of the fuse proper, for which it forms a framework and hooks itself as best possible into the weaker material, reinforcing the latter at the points which olfer least resistance to the forces to which the body of the fuse is subjected upon the firing of the shot.

One of the most simple and expedient forms of construction of the invention, in

practice, will be that illustrated in the accompanying drawing, in which the detonator carrying framework is constituted by a tube, expanded at its upper end bf and thus reinforcing above all the back part of the body A, in the neighborhood of the threads a. by which the body is screwed into the nose of the projectile, as well as the part o where the head of the body A east metal and 'having vla, lreduced @tubular .rear extenslonfand -awtloul'ar-V member of stronger fmetal embedded .2in 'zszwd :reduced maarextensiony `and' .projecting rearward therefrom.' Y

" .2. A Shell- ?.use body "Comprising aheed portion of comparatively Weak foakstlrzmetl Aand 1.a tubular i-'eeniolicement of stronger ,extension of said head portion, mld mez\1\1s for securing a detonator to the projeot g re-Lu" 'end' of sad -reenforcement.

Y3.4Ashe11.use'body comprising a head poton ofY comparatively Weak cast metal'V and l,zu tubular 1:'eenforcement of stronger metal embedded `4in seid tubularv rear eX- tension of said .head .porton, with .its for-V Ward -endrv fflared foutwmd, and* means Vzre- Stramlng -the -two 1members.larga-'111% relative longtudmal movement..y f

In testimony whereoflhwe signed Athis -vf LoNV nEMoNDY. 

